Safety-gate for bascule-bridges.



0. FAUST.

SAFETY GATE FOB BASGULE BRIDGES.

APPLICATION mum MAR. s, 1912. 1,031,333; Patented July 2, 1912.

2 sums-slum 1 G. FAUST.

SAFETY GATE FOR BASOULE BRIDGES.

APPLICATION FILED MAR. 5, 1912.

1,031,333. Patented July 2, 1912.

2 SHEETS-SHEET 2.

COLUMBIA I'LANOGRAPM C0.,WA5HING'I'0N. D. c.

UNITED STATES PATENT OFFICE.

CASPER FAUST, OF OSHKOSH, WISCONSIN.

SAFETY-GATE FOR BASCULE-BRIDGES.

To all whom it may concern:

Be it known that I, CASPER FAUS'I, a cit1- zen of the United States, and resident of Oshkosh, in the county of Vinnebago and State of \Visconsin, have invented certain new and useful Improvements in Safety- Gates for Bascule-Bridges; and I do hereby declare that the following is a full, clear,

and exact description thereof.

My invention refers to lift bridges of the features of my invention, the sections beingl indicated by line 1--1 of Fig. 2; Fig. 2 represents a top plan view of the under side of the heel end of the bridge and its adjacent abutment, the view being partly in section as indicated by line 2-2 of Fig. 1; Fig. a detailed plan view of a pair of the bridge gates showing their link connection, and Fig. 1 illustrates a detailed vertical sectional view of the weighted end of one of the cables, the section being indicated by line 1 1 of Fig. 2.

Referring by characters to the drawings, 1 represents the heel abutment of a single span bridge 2 at which abutment the bridge span is fulcrumed upon a trunnion shaft 3 that is journaled in bearings of a pair of brackets 41 that are suitably supported upon the superstructure of said abutment. The bridge member is raised and lowered through a gear-train comprising pinions 5 that are secured to a suitably journaled counter-shaft (3, which pinions mesh with toothed sectors 7 that are fast upon the bridge member and trunnion shaft 3. Mounted upon one end of the counter-shaft 6 is a gear wheel 8 that receives its drive from a pinion 9, the same being mounted upon a power-shaft 10 that is driven from any suitable source.

The above described gear-tram for raising and lowering the bridge forms no part of Specification of Letters Patent.

Application filed March 5, 1912.

subsequently 1 Patented July 2, 1912.

Serial No. 681,774.

my invention being simply shown and described as a necessary adjunct thereto.

Projecting upward through the heel abutment 1 between the roadway thereof and sidewalk sections are pairs of posts 11, 11, the same being mounted in suitable journals with which the abutment is provided. The master post 11 of each pair carries a roadway gate 12 and the companion post 11 a similar sidewalk gate 12. The upper ends of the posts are provided with cranks 13, 13' respectively, having crank pins, which crank pins are connected by a link let. This pair of cranks are set relative to each other and their respective gates in such position that when said gates are closed the link connecting the cranks is alinedwith the crank-pin and axis upon which the main or roadway gate revolves and hence the sidewalk gate in this position is automatically locked against movement in either direction, it being understood that the gates are folded to permit the passage of traflic and closed by suitable weight mechanism. Secured to the lower ends of master or roadway gate posts 11 and under the abutment are horizontally disposed sheaves 15, 15, to each of which sheaves is secured a cable 16, one stretch of which cable is connected to the sheaves upon opposite sides and in conjunction with the sheaves said table stretch constitutes a lever connection whereby the )osts are partially rotated in opposite directions. The cable 16 adjacent to one end, extends partly around sheave 15' and over a vertically disposed guide pulley 17 from which point the cable depends and has secured thereto a gate-closing weight 18. The cable is given a complete turn about the opposite sheave 15 and from thence it passes over a guide sheave 17 and downward to the end of one arm 19 of a bell-crank lever to which lever it is connected by a turnbuckle 20 for the purpose of adjustment. To limit the movement of the bell-crank in one direction the end of the arm 19 is also connected to a short cable section 16 that has its opposite end anchored to the abutment, there being a turnbuckle connection 20 between said cable and arm similar to that in connection with its opposite cable connection. As shown in Fig. 1, the opposite arm 19 of the bell-crank is arranged to be engaged by a shoe 21 that projects from the heel end of the bridge member 2 and when said bridge is closed for traflic this shoe rocks the bell-crank in opposition to the weighted cable 16 whereby the pairs of gates are folded between the abutment sidewalk and roadway to permit traffic. Hence it is apparent that when the bridge is open, or raised at its toe end, the heel end falls, causing the shoe to disengage the bellcrank whereby the weighted cable connection between the main or roadway gates wil act to close the same and the link and crank connection between said gates and the sidewalk gates will also cause the latter to close, the companion pairs being extended transversely of the abutment.

The above described gate-actuating mechanism it should be understood is also employed at the toe ends of the double span bridge and will operate as efiectually as in connection with the single span bridge as described.

I claim:

1. In a lift-bridge member having a heel end abutment, trunnions' for the bridge member supported thereby, and raising and lowering means in gear connection with the bridge trunnions; the combination of a shoe secured to the heel of the bridge, a bell crank mounted upon the adjacent abutment having one arm adapted to be engaged by the shoe when the bridge is closed, pairs of vertically disposed parallel posts journaled in the abutment and extending upward there-- through, cranks secured to the upper ends of each pair of posts, a link connecting each pair of the cranks, gates secured to the posts, a cable connecting one of the posts of each pair and a bell-crank lever, a weight secured to the free end of the cable whereby Copies of this patent may be obtained for the gates are swung open incidental to engagement of the shoe and bell-crank, and

means for limiting movement of said bellcrank lever.

2. In a lift-bridge member having a heel end abutment, trunnions for the bridge member supported thereby, and raising and lowering means in gear connection with the bridge trunnions; the combination of a shoe secured to the heel of the bridge, a bellcrank mounted upon the adjacent abutment having one arm adapted to be engaged by the shoe when the bridge is closed, pairs of vertically disposed parallel posts journaled in the abutment and extending upward therethrough, cranks secured to the upper ends of each pair of posts, a link connecting each pair of the cranks, gates secured to the posts, sheaves secured to the lower end of a post of each pair under the abutment, a cable having one stretch connecting the sheaves upon opposite sides, the cable being wound about one of the sheaves and connected to the other arm of the bell-crank lever, guide-sheaves for said cable, and a weight connected to the free end of the aforesaid cable whereby the gates are swung open incidental to engagement of the shoe and bell-crank lever;

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of WVisconsin in the presence of two witnesses.

CASPER FAUST.

Witnesses Cnno W. YOUNG, M. E; DOWNEY.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

